28286011 has 16 divisors (see below), whose sum is σ = 32508000. Its totient is φ = 24380928.

The previous prime is 28285997. The next prime is 28286017. The reversal of 28286011 is 11068282.

It is a de Polignac number, because none of the positive numbers 2^k-28286011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28286017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32500 + ... + 33358.

It is an arithmetic number, because the mean of its divisors is an integer number (2031750).

Almost surely, 2^28286011 is an apocalyptic number.

28286011 is a deficient number, since it is larger than the sum of its proper divisors (4221989).

28286011 is a wasteful number, since it uses less digits than its factorization.

28286011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 28286011 is about 5318.4594573993. The cubic root of 28286011 is about 304.6893226330.

The spelling of 28286011 in words is "twenty-eight million, two hundred eighty-six thousand, eleven".